Business Commons^™

Collaborative Speculation And Overvaluation: Evidence From Social Media, Adam Barrett Booker

Graduate Theses and Dissertations

I use data from StockTwits and Twitter to provide evidence that investor attention on social media in the period before earnings is related to short-term overvaluation, consistent with bullish investors herding around common information. In the 2 to 60 days after earnings, returns for companies in the highest quintile of pre-earnings announcement investor attention are 4.2 percent lower than those of companies in the lowest quintile. I find evidence that the negative post-earnings drift result found in this study is related to investors waiting until after earnings are announced to enact costly arbitrage strategies. I further examine intra- and inter-network …

Essays On Corporate Finance And Interstate Risk Sharing, Liu Hong

Graduate Theses and Dissertations

My dissertation consists of two topics: the relation between derivatives and corporate finance, and the relation between bank deregulation and interstate risk sharing.

In the first essay, I study the use of commodity derivatives among U.S. oil and gas producers. Using hand-collected data, I find large variations in hedging intensity and hedging profits. On average, firms generate significantly positive profits, and their profits relate positively to the intensity of hedging. I further decompose the hedge ratio into two components: the pure hedging component and the market timing component. I find that the hedging profits relate strongly and positively to the …

Essays On Networks And Corporate Finance, Tatiana Salikhova

Graduate Theses and Dissertations

In my dissertation I explore how personal networks affect firms’ financial decisions. In the first essay, I study how social connections among divisional managers affect the capital allocation to divisions in diversified conglomerates. In contrast to the previous studies, I focus on the horizontal connections or connections formed among managers of the same level of corporate hierarchy. I show that connections among divisional managers lead to higher sensitivity of segment capital spending to segment’s growth opportunities, higher firm-level allocation efficiency and higher firm value. Additionally, firms tend to strategically assign better-connected managers to these segments, and connections help to reduce …